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Product code: S12438
Image shown for illustration purposes only.
View Large ImageThe Potterton Sirius Three 50 floor standing condensing boiler is suitable for a whole range of projects of varying sizes requiring up to 440kW. With modulation ratios of up to 9:8, a reliable stainless steel heat exchanger and the lowest NOx rating available, this unit is ErP A-rated for energy efficiency and offers a gross seasonal efficiency of up to 97.5%. Extremely compact, with castors attached to the bottom, this boiler makes installation easy in any location.